Update at 6 p.m.:

Traffic conditions are expected to worsen overnight as temperatures fall to freezing.

According to the National Weather Service, a persistent mix of light rain/snow is moving further east across I-65. It will move out of the area over the next few hours, but road conditions remain dangerous as temperatures fall below freezing.

Black ice could also form on roads overnight and into the early hours of the morning. Black ice is a thin, clear layer of ice that forms on surfaces such as roads, sidewalks and driveways. It can appear almost invisible on surfaces and cause problems for drivers and people walking on them.

“As of 6 p.m., all streets in Madison City will remain open except Eastview Drive and Stone Way Trail. We expect road conditions to deteriorate and black ice to form as temperatures fall below freezing overnight. Please use caution if you must travel,” Madison City officials said.

The current forecast can be found below:

Latest updates on North Alabama roads at 6 p.m. from the Alabama Law Enforcement Agency:

Colbert County – There were no changes on state and federal highways. They have been sorted and/or salted and appear to be passable with a few slippery spots.

Franklin County – There were no changes on state and federal highways. They have been sorted and/or salted and appear to be passable with a few slippery spots.

Jackson County – All state and federal highways have been graded and/or salted and have some slippery areas. All county roads are impassable.

Lauderdale County – There were no changes on state and federal highways. They have been sorted and/or salted and appear to be passable with a few slippery spots.

Lawrence County – There were no changes on state and federal highways. They have been sorted and/or salted and appear to be passable with a few slippery spots.

Limestone County – All state and federal highways have been graded and/or salted and have some slippery areas. Highway 99 near Cottonbelt Road is icy. ALDOT treated. All county roads are impassable.

Madison County – All state and federal highways have been graded and/or salted and have some slippery areas. All county roads are impassable.

Marshall County – All state and federal highways have been graded and/or salted and have some slippery areas. All county roads are impassable.

Morgan County – All state and federal highways have been graded and/or salted and have some slippery areas. All county roads are impassable.

Earlier:

Snow-covered roads and the possibility of ice and persistent freezing temperatures have led to a travel advisory for Madison County.

The National Weather Service in Huntsville said the wintry mix of snow and ice began moving across the area around 8 a.m. Rainfall is expected to end around 6pm today from west to east, but overnight temperatures will freeze what is on the road, creating additional dangers overnight.

Temperatures are expected to climb above freezing tomorrow.

READ MORE: Is Huntsville International Airport open? Delays and cancellations are more common due to winter weather

Travel tips

Travel Advisory The Madison County Sheriff’s Department has issued a travel advisory due to deteriorating road conditions in the county. The cities of Huntsville and Madison also urge caution due to snow-covered roads and icy bridges.

“The dangers associated with driving on icy bridges are significant, and we urge residents to exercise extreme caution and avoid unnecessary trips,” the Madison County Sheriff’s Department said in a statement.

According to the Alabama Law Enforcement Agency, all roads in Madison are icy and considered impassable. Road ice was reported in numerous locations in Huntsville, including along Highway 72, I-565 and US 431.

As of 2 p.m., the Madison County Sheriff said there are no road closures in the northern part of the county, but people are advised to continue to consider county roads impassable.

“Temperatures will fall in the coming hours, resulting in icy conditions that will significantly impact travel safety. We strongly advise against using county roads until further notice,” officials said.

Alabama Department of Transportation traffic cameras show some cars traveling on County Line Road through Town Madison at I-565 at Madison Blvd. You can see travel cameras here. You can find more traffic cameras here.

Cecil Ashburn, Bankhead Parkway and Green Mountain Road in Huntsville are closed. According to the city, Eastview Drive in Madison is also closed.

“Due to inclement weather, road conditions are deteriorating,” Madison City Police said at 11 a.m. Friday. “All roads become impassable and dangerous. Madison Police urge you to stay off the streets unless absolutely necessary. If you must exit in these dangerous conditions, use extreme caution.”

A winter storm warning is in effect for northern Alabama until 6 a.m. Saturday, with the possibility of hazardous road conditions. Up to 10 cm of snow is possible with up to 1/10 inch of ice accumulation.

Other road conditions in the county, according to the Alabama Law Enforcement Agency:

Colbert County – All state and federal highways are covered in a snow/ice mix and are considered slick and impassable. The south side of US 43 is impassable. County Line Road is impassable. Highway 20 has one lane that is passable on both the east and west sides, but still has some slippery spots.

Dekalb County – All roads are covered in snow and are considered impassable.

Franklin County – All state and federal highways are covered in a snow/ice mix and are considered slippery and impassable.

Jackson County – All roads are covered in snow and are considered impassable.

Lauderdale County – All state and federal highways are covered in a snow/ice mix and are considered slippery and impassable. A snow grader has been deployed on Highway 20, but it is still slick.

Lawrence County – All state and federal highways are covered in a snow/ice mix and are considered slippery and impassable.

Limestone County – All roads are covered in snow and are considered impassable.

Madison County – All roads are covered in snow and are considered impassable.

Marshall County – All roads are covered in snow and are considered impassable.

Morgan County – All roads are covered in snow and are considered impassable.